Yang Yi, chief physician, Professor, master tutor. Engaged in ultrasound work for 30 years, specializing in obstetrics and Gynecology, abdomen, small organ ultrasound diagnosis and ultrasound interventional therapy. Member of the second session of ultrasound Committee of Obstetrics and Gynecology of ultrasound branch of Chinese Medical Association, member of the Standing Committee of ultrasound Committee of reproductive health and eugenics and eugenics of Chinese ultrasonic medical engineering society, member of the abdomen Professional Committee of Chinese ultrasonic medical engineering society, vice chairman of ultrasound medical branch of Hebei Medical Association, member of the Standing Committee of ultrasound branch of Hebei Medical Association, medical science of Hebei women Medical Association Member of Standing Committee of Special Committee for imaging, director of Hebei Women Doctors Association, deputy group leader of Hebei ultrasound quality control center, executive director of the Fifth Council of Hebei eugenics and eugenics Association, vice chairman of Ultrasound Medicine Management Branch of Hebei Health Management Association, director of the first Council of Hebei Health Management Association, committee member of the first committee of maternity hospital management branch of Hebei Hospital Association Member, director of Hebei ultrasonic medical engineering society.